21202131002 has 32 divisors (see below), whose sum is σ = 35092085952. Its totient is φ = 9545485824.

The previous prime is 21202131001. The next prime is 21202131011. The reversal of 21202131002 is 20013120212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21202131001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867818 + ... + 891914.

It is an arithmetic number, because the mean of its divisors is an integer number (1096627686).

Almost surely, 2^21202131002 is an apocalyptic number.

21202131002 is a deficient number, since it is larger than the sum of its proper divisors (13889954950).

21202131002 is a wasteful number, since it uses less digits than its factorization.

21202131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24942.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21202131002 its reverse (20013120212), we get a palindrome (41215251214).

The spelling of 21202131002 in words is "twenty-one billion, two hundred two million, one hundred thirty-one thousand, two".